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Date: Mon, 16 Sep 2013 20:27:04 -0600
From: Kurt Seifried <kseifried@...hat.com>
To: oss-security@...ts.openwall.com
CC: Florian Weimer <fweimer@...hat.com>
Subject: Re: Re: CVE Request: glibc getaddrinfo() stack overflow

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On 09/14/2013 04:56 AM, Florian Weimer wrote:
> On 08/22/2013 09:18 AM, Florian Weimer wrote:
>> On 07/04/2013 09:06 PM, Maksymilian wrote:
>>>> Perhaps there are some missing CVE ids?
>>> 
>>> In 2011 the problem with alloca() was not defined as a
>>> vulnerability.
>>> 
>>> http://sourceware.org/bugzilla/show_bug.cgi?id=12671
>> 
>> I believe the analysis in this bug report is incorrect.  The
>> security implications are unclear.  A straight copy of a long
>> name to a stack buffer should trigger a crash because it hits the
>> guard page, but even that could be a problem for daemons.
>> 
>> On the other hand, it's impossible to know for sure that no GCC
>> version ever lays out the stack in such a way that we end up with
>> a problem. Multi-threaded programs linking in script interpreters
>> are more exposed to these problems, too.
> 
> Kurt told me that the above didn't make it sufficiently clear that
> I consider this issue CVE-worthy.

I prefer things to be explicit rather than assumed =).
Please use CVE-2013-4357  for this issue.

- -- 
Kurt Seifried Red Hat Security Response Team (SRT)
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